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Accounts receivable | 12 Months Ended
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Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract] |
Accounts receivable | Accounts receivableAccounts receivable as of December 31, 2021 include unbilled revenue of $102,693 (December 31, 2020 - $91,538) from the Company’s regulated utilities. Accounts receivable as of December 31, 2021 are presented net of allowance for doubtful accounts of $19,327 (December 31, 2020 - $19,628).

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